Barry R. Noon, Jennifer A. Blakesley: Conservation of the Northern Spotted Owl under the Northwest Forest Plan. In: Conservation Biology. Band20, Nr.2, 2006, S.288–296, doi:10.1111/j.1523-1739.2006.00387.x (englisch, Online): “registration needed”
Barry R. Noon, Jennifer A. Blakesley: Conservation of the Northern Spotted Owl under the Northwest Forest Plan. In: Conservation Biology. Band20, Nr.2, 2006, S.288–296, doi:10.1111/j.1523-1739.2006.00387.x (englisch, Online): “registration needed”